Home / 986,931,644,945.42-1,361,464,425,372.20-644,575,907,225.90

Finding the Fourth Proportional to 986,931,644,945.42, 1,361,464,425,372.20 and 644,575,907,225.90

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Solution

The fourth proportional to 986,931,644,945.42, 1,361,464,425,372.20 and 644,575,907,225.90 is: 889,187,383,578.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,931,644,945.42 : 1,361,464,425,372.20 = 644,575,907,225.90 : x
  2. Step 2: Convert to fraction form
    986,931,644,945.42/1,361,464,425,372.20 = 644,575,907,225.90/x
  3. Step 3: Cross multiply
    986,931,644,945.42x = 1,361,464,425,372.20 × 644,575,907,225.90
  4. Step 4: Simplify right side
    986,931,644,945.42x = 877,567,167,140,074,484,662,272
  5. Step 5: Solve for x
    x = 877,567,167,140,074,484,662,272/986,931,644,945.42
  6. Step 6: Final answer
    x = 889,187,383,578.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.